Erro no logout

Quando eu clico no logout ele da isso:

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-login.php on line 302

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-login.php on line 314

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-login.php on line 316

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 692

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 693

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 694

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 695

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 696

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 697

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 700

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 701

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 702

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 703

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 706

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 707

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 708

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 709

Warning: Cannot modify header information – headers already sent by (output started at E:\vhosts\tatucaminha.com.br\httpdocs\wp-config.php:1) in E:\vhosts\tatucaminha.com.br\httpdocs\wp-includes\pluggable.php on line 864

Já tentei apagar esses erros, mas ele da fatal error no logout.
Alguém sabe o que pode ser?